A very interesting article here.

An important bit of perspective on the issue? Or just more of the seemingly inexhaustible fantasy that if we'd just throw all our nasty guns in the ocean and stop fighting then everyone would be nice to us?

One point:

Regardless of how deadly or not deadly a "dirty bomb" actually is, the near-psychotic fear of radiation implanted in the modern society by years of environmentalist hostility towards anything nuclear will guarantee that any area hit by such a weapon will be deserted for years, if not decades. Think Las Vegas. A dirty bomb is not harmless if it can wreck an area's economy.